Rotating shaft mechanism and foldable terminal equipment

Abstract

The invention relates to a rotating shaft mechanism and foldable terminal equipment. The rotating shaft mechanism comprises a rotating shaft base, a shaft cover assembly, a rotating shaft, an eccentric part and a limiting piece. The shaft cover assembly is arranged on one side of the rotating shaft base in the thickness direction of the rotating shaft base, and the shaft cover assembly is provided with a containing groove. The rotating shaft is rotationally arranged on the rotating shaft base. The eccentric part is fixedly arranged at one end of the rotating shaft and deviates from the axis of the rotating shaft. The eccentric part is rotatably arranged in the containing groove and is in clearance fit with the containing groove. When the rotating shaft rotates, the eccentric part drives the shaft cover assembly to move in the thickness direction of the rotating shaft base. The limiting piece is at least partially located in the containing groove. The limiting piece is used for abutting against the eccentric part in the rotating process. When the eccentric part rotates, the limiting piece can at least fill the gap between the containing groove and the eccentric part, the eccentric part can limit rotation or displacement of the limiting piece relative to the inner wall of the containing groove when the eccentric part rotates, and therefore abnormal sound is reduced.

Description

Hinge mechanism and foldable terminal device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 13, 2022, with application number 202210827273.8 and application name “Hinge mechanism and foldable terminal device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a hinge mechanism and a foldable terminal device. Background Art

[0003] Foldable devices can be deployed in two positions: unfolded and folded. The hinge mechanism is a crucial component for achieving both these functions. During the transition between unfolded and folded positions, the internal transmission mechanism of the hinge mechanism is prone to failures, which not only impacts the user experience but also reduces the lifespan of components.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a hinge mechanism and a foldable terminal device, which are used to solve the problem of abnormal noise caused by collision between parts when the hinge mechanism rotates.

[0006] An embodiment of the present application provides a rotating shaft mechanism, comprising a rotating shaft base, a shaft cover assembly, a rotating shaft, an eccentric portion, and a limiting member. The shaft cover assembly is arranged on one side of the rotating shaft base along the thickness direction of the rotating shaft base, and the shaft cover assembly is provided with a receiving groove. The rotating shaft is rotatably arranged on the rotating shaft base. The eccentric portion is fixedly arranged at one end of the rotating shaft, and the eccentric portion deviates from the axis of the rotating shaft. The eccentric portion is rotatably arranged in the receiving groove and is clearance-matched with the receiving groove. When the rotating shaft rotates, the shaft cover assembly is driven to move along the thickness direction of the rotating shaft base by the eccentric portion. The limiting member is at least partially located in the receiving groove. The limiting member is used to abut against the eccentric portion during rotation.

[0007] In this embodiment, when the rotating shaft rotates, it can drive the eccentric portion to rotate around the axis of the rotating shaft in the receiving groove. The rotation of the eccentric portion can drive the shaft cover assembly to move along the thickness direction of the rotating shaft base. Because the limiting member is at least partially located in the receiving groove, and the eccentric portion can abut against the eccentric portion when it rotates, therefore, when the eccentric portion rotates, the limiting member can at least fill the gap between the receiving groove and the eccentric portion. When the eccentric portion rotates, the eccentric portion can limit the rotation or displacement of the limiting member relative to the inner wall of the receiving groove, thereby reducing abnormal noise.

[0008] In one embodiment, the limiting member includes a first limiting layer, the first limiting layer is arranged on the inner wall of the accommodating groove, and the eccentric portion abuts against the first limiting layer.

[0009] In this embodiment, the first limiting layer can be laid on the inner wall of the accommodating groove and can occupy a larger area, so that the eccentric part can have a larger contact area with the inner wall of the accommodating groove, thereby enhancing the stability of the eccentric part when rotating in the accommodating groove.

[0010] In one embodiment, the shaft cover assembly includes a relatively fixed lifting block and a shaft cover. The shaft cover is positioned on the side of the lifting block away from the shaft base. The lifting block is provided with a receiving slot. Therefore, when the shaft cover assembly moves along the thickness direction of the shaft base, the lifting block drives the shaft cover to move. The lifting block serves as the location for the receiving slot.

[0011] In one embodiment, the limiting member also includes a second limiting layer and a connecting portion. The second limiting layer is arranged on the outer wall of the lifting block, the inner wall of the accommodating groove is opposite to the outer wall of the lifting block, and the first limiting layer and the second limiting layer are connected by the connecting portion.

[0012] In this embodiment, the first limiting layer and the second limiting layer are sandwiched between the inner wall of the receiving groove and the outer wall of the lifting block, thereby preventing the first limiting layer from falling off from the receiving groove due to sliding friction when the eccentric part rotates.

[0013] In one embodiment, the lifting block includes a bottom plate and a first side plate. The bottom plate and the first side plate surround and form at least a portion of a receiving slot. The entrance of the receiving slot is opposite the bottom plate, and the plane on which the first side plate is located extends along the axis of the rotating shaft. The first limiting layer is located on the surface of the first side plate facing the interior of the receiving slot, and the second limiting layer is located on the surface of the first side plate facing away from the interior of the receiving slot. The connecting portion connects the first limiting layer and the second limiting layer through the entrance of the receiving slot.

[0014] In this embodiment, the first limiting layer and the second limiting layer are respectively clamped on two surfaces of the first side plate. The first limiting layer can abut against the side wall of the limiting member, thereby increasing the contact area between the first limiting layer and the limiting member.

[0015] In one embodiment, the first limiting layer is provided with a protruding structure protruding toward the accommodating groove, and the protruding structure abuts against the eccentric portion.

[0016] In this embodiment, the protruding structure may have a certain elasticity, so it can play a buffering role on the eccentric column when the eccentric column shakes.

[0017] In one embodiment, the protruding structure is disposed in the middle of the first limiting layer. Both ends of the first limiting layer are respectively in contact with the surface of the first side plate facing the receiving groove.

[0018] In this embodiment, when the protruding structure is squeezed by the eccentric column, the force can be transmitted to the first side plate through the two ends of the first limiting layer.

[0019] In one embodiment, the protruding structure is located at one end of the first limiting layer close to the bottom plate.

[0020] In this embodiment, the protruding structure is provided at one end of the first limiting layer close to the bottom plate, which can enhance the limitation of the end of the limiting member and avoid collision between the limiting member and the bottom of the accommodating groove.

[0021] In one embodiment, the lifting block includes a second side plate and a third side plate. The planes on which the second and third side plates are located extend along the axis of the rotation shaft and are located at opposite ends of the first side plate. The bottom plate, the first side plate, the second side plate, and the third side plate surround and form at least a portion of the receiving groove. The first, second, and third side plates surround and form a first limiting groove on the outer wall of the lifting block, and the second limiting layer is located in the first limiting groove.

[0022] In this embodiment, the first limiting groove is formed by the bottom plate, the first side plate, the second side plate and the third side plate. The structure is simple and can limit the position of the second limiting layer to prevent the second limiting layer from falling off the outer wall of the lifting block.

[0023] In one embodiment, the first side plate, the second side plate and the third side plate surround the inner wall of the accommodating groove to form a second limiting groove, and the first limiting layer is located in the second limiting groove.

[0024] In this embodiment, the second limiting groove is formed by the bottom plate, the first side plate, the second side plate and the third side plate. The structure is simple and can limit the position of the first limiting layer to prevent the first limiting layer from falling off the inner wall of the accommodating groove.

[0025] In one embodiment, the lifting block includes a bottom plate, a first side plate and a fourth side plate. The entrance of the receiving groove is opposite to the bottom plate. The plane where the first side plate is located and the plane where the fourth side plate is located extend along the axis of the rotating shaft. The fourth side plate is opposite to the first side plate. The bottom plate, the first side plate and the fourth side plate surround and form at least part of the receiving groove. The first limiting layer is located on the surface of the bottom plate facing the interior of the receiving groove, and the second limiting layer is located on the surface of the bottom plate facing away from the interior of the receiving groove. The connecting portion connects the first limiting layer and the second limiting layer through an opening located between the first side plate and the fourth side plate.

[0026] In this embodiment, the first limiting layer and the second limiting layer are clamped on both sides of the bottom plate, and the second limiting layer is limited to the bottom wall of the receiving groove, which can reduce the collision of the limiting member with the bottom wall of the receiving groove and reduce abnormal noise.

[0027] In one embodiment, the first limiting layer, the connecting portion, and the second limiting layer are integrally formed to enhance the overall strength of the limiting component.

[0028] In one embodiment, the first limiting layer, the connecting portion and the second limiting layer are metal sheets, so the limiting member has a certain toughness and elasticity, which can buffer the eccentric portion and prevent damage to the eccentric portion caused by hard contact.

[0029] In one embodiment, the first limiting layer, the second limiting layer and the connecting layer are formed on the lifting block by injection molding, which is simple in process and low in cost, and can effectively match the size of the lifting block.

[0030] In one embodiment, the inner wall of the receiving groove includes a bottom wall and side walls, wherein the bottom wall of the receiving groove is opposite to the entrance of the receiving groove, and the side walls extend along the axis of the rotating shaft. The first limiting layer is provided on the bottom wall of the receiving groove.

[0031] In one embodiment, the bottom wall of the receiving groove is provided with two limiting steps, and the first limiting layer is sandwiched between the two limiting steps. The space between the two limiting steps can be used to limit the first limiting layer 572 and prevent the first limiting layer from falling off the bottom wall of the receiving groove.

[0032] In one embodiment, the inner wall of the receiving groove includes a bottom wall and a side wall, the bottom wall of the receiving groove is opposite to the entrance of the receiving groove, the side wall extends along the axis of the rotating shaft, and the first limiting layer is arranged on the side wall.

[0033] In one embodiment, a third limiting groove is provided on the surface of the first limiting layer facing the interior of the receiving groove, and the third limiting groove extends along the direction of the rotation axis. The side wall of the eccentric portion can be embedded in the third limiting groove to reduce the degree of shaking of the eccentric column.

[0034] In one embodiment, the rotating shaft mechanism further includes a guide mechanism disposed between the shaft cover assembly and the rotating shaft base. The guide mechanism is configured to constrain the shaft cover assembly from moving along the thickness direction of the rotating shaft base. Thus, when the eccentric portion rotates, the rotating shaft assembly is prevented from wobbling side to side, and vertical movement of the rotating shaft assembly is restricted.

[0035] In one embodiment, the shaft base has a first guide hole along its thickness direction, the lifting block has a second guide hole, the first guide hole and the second guide hole are coaxially arranged, and guide posts are inserted into the first guide hole and the second guide hole.

[0036] In one embodiment, the eccentric portion includes an eccentric column fixedly mounted at one end of the rotating shaft. The axis of the eccentric column is parallel to the axis of the rotating shaft, and the width of the receiving groove is greater than the diameter of the eccentric column. The width of the receiving groove is perpendicular to the axis of the rotating shaft and the thickness of the rotating shaft base, respectively. The axis of the rotating shaft is perpendicular to the thickness of the rotating shaft base.

[0037] When the eccentric column rotates around the axis of the rotating shaft, the maximum displacement difference of the eccentric column in the thickness direction of the rotating shaft base is a first distance, the height of the accommodating groove in the thickness direction of the rotating shaft base is a second distance, and the first distance is greater than the second distance.

[0038] In one embodiment, the rotating shaft mechanism further includes a swing arm, which is fixedly connected to the rotating shaft.

[0039] The embodiment of the present application also provides a rotating shaft mechanism. The rotating shaft base includes a rotating shaft base, a shaft cover assembly, a rotating shaft, and an eccentric column. The shaft cover assembly is arranged on one side of the rotating shaft base along the thickness direction of the rotating shaft base, and the shaft cover assembly is provided with a receiving groove. The rotating shaft is rotatably arranged on the rotating shaft base. The axis of the rotating shaft is perpendicular to the thickness direction of the rotating shaft base. The eccentric column is fixedly arranged at one end of the rotating shaft. The axis of the eccentric column is parallel to the axis of the rotating shaft, the width of the receiving groove is greater than the diameter of the eccentric column, and the width direction of the receiving groove is perpendicular to the axis of the rotating shaft and the thickness direction of the rotating shaft base, respectively. When the eccentric column rotates around the axis of the rotating shaft, the maximum displacement difference of the eccentric column in the thickness direction of the rotating shaft base is a first distance, the height of the receiving groove in the thickness direction of the rotating shaft base is a second distance, and the first distance is greater than the second distance. The limiting member is at least partially located in the receiving groove, and the limiting member is used to abut against the eccentric column during rotation.

[0040] In this embodiment, since the maximum displacement difference of the eccentric column in the thickness direction of the shaft base is the first distance, and the height of the receiving groove in the thickness direction of the shaft base is the second distance, the first distance is greater than the second distance. The width of the receiving groove is greater than the diameter of the eccentric column. Therefore, the eccentric column has space to move left and right when rotating, and can contact the side wall of the receiving groove in the thickness direction of the shaft base, thereby driving the shaft cover assembly to move up and down. During the rotation and movement of the eccentric part, the limiting member can at least fill the gap between the receiving groove and the eccentric part, and the eccentric part can limit the rotation or displacement of the limiting member relative to the inner wall of the receiving groove when the eccentric part rotates, thereby reducing abnormal noise.

[0041] An embodiment of the present application further provides a foldable terminal device, which includes the hinge mechanism of the above embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic diagram of a foldable terminal device flattened in some embodiments of the present application;

[0043] FIG2 is a schematic diagram of a foldable terminal device at a certain folding angle in some embodiments of the present application;

[0044] FIG3 is a schematic diagram of a foldable terminal device at a certain folding angle in some embodiments of the present application;

[0045] FIG4 is a side view of a foldable terminal device in a folded state in some embodiments of the present application;

[0046] FIG5 is a schematic diagram of a flattened state of a rotating shaft mechanism in some embodiments of the present application;

[0047] FIG6 is a schematic diagram of a rotating shaft mechanism at a certain folding angle in some embodiments of the present application;

[0048] FIG7 is an exploded view of a rotating shaft mechanism in some embodiments of the present application;

[0049] FIG8 is a schematic diagram of a rotating shaft and an eccentric portion in some embodiments of the present application;

[0050] FIG9 is a schematic diagram of the AA section in FIG5 in some embodiments of the present application;

[0051] FIG10 is a schematic diagram of the BB section of FIG5 in some embodiments of the present application;

[0052] FIG10a is an enlarged view of point M in the embodiment shown in FIG10;

[0053] FIG11 is a schematic diagram of the BB section of FIG6 in some embodiments of the present application;

[0054] FIG11a is an enlarged view of point N in the embodiment shown in FIG11 ;

[0055] FIG12 is an exploded view of a lifting block and a limiting member in some embodiments of the present application;

[0056] FIG13 is a schematic cross-sectional view of the assembly mechanism of the embodiment of FIG12 taken along line BB in FIG5 ;

[0057] FIG14 is a schematic diagram of the cooperation between the lifting block and the limiting member in some embodiments of the present application;

[0058] FIG15 is an exploded view of a lifting block and a limiting member in some embodiments of the present application;

[0059] FIG16 is a side sectional view of the assembly mechanism of the embodiment of FIG14;

[0060] FIG17 is an exploded view of a lifting block and a limiting member in some embodiments of the present application;

[0061] FIG18 is a schematic cross-sectional view of the assembly mechanism of the embodiment of FIG17 taken along line BB in FIG5 ;

[0062] FIG19 is an exploded view of a lifting block and a limiting member in some embodiments of the present application;

[0063] FIG20 is a side sectional view of the assembly mechanism of the embodiment of FIG19;

[0064] FIG21 is a front cross-sectional view of the assembly mechanism of the embodiment of FIG19;

[0065] FIG22 is a schematic diagram of a position limiting member in some embodiments of the present application;

[0066] FIG23 is a schematic diagram of a position limiting member in some embodiments of the present application;

[0067] FIG24 is an assembly diagram of a lifting block and a limiting member in some embodiments of the present application;

[0068] FIG25 is an assembly diagram of a lifting block and a limiting member in some embodiments of the present application;

[0069] FIG. 26 is an exploded view of the lifting block and the limiting member in the embodiment of FIG. 25 .

[0070] DESCRIPTION OF NUMERALS AND SIGNS: Folding mobile phone 100; Folding screen 10; Support device 20; First housing 21; Second housing 22; Rotating shaft mechanism 23; Rotating shaft base 110; Support plate 350; First guide hole 351; Second connecting sleeve 340; Connecting plate 352; Shaft cover assembly 120; Lifting block 121; Second guide hole 353; Shaft cover 122; Cylindrical protrusion 584; Threaded groove 583; Rotating shaft 320; Swing arm 300; First connecting sleeve 310; Second cam 312; Second convex portion 313; Second concave portion 314; Eccentric portion 330; Limiting section 322; Flattened portion 324; Damping structure 400; Elastic member 410; First cam 420; First convex portion 421; First concave portion 422; Accommodating groove 500; Entrance 501; Bottom plate 550; First side panel 510; limiting opening 511; limiting step 512; second side panel 520; third side panel 530; fourth side panel 540; guide mechanism 560; guide post 561; limiting member 570; first limiting layer 572; third limiting groove 573; protruding structure 574; second limiting layer 575; connecting portion 576; first limiting groove 584; second limiting groove 582. DETAILED DESCRIPTION

[0071] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0072] In the embodiment of the present application, the term "transmission connection" means that the movement of one of the two connected components can be transmitted to the other component, and the connection method between the two components includes but is not limited to at least one of the connection methods such as rotation connection, sliding connection, gear meshing transmission connection, sprocket transmission connection, and cam mechanism transmission connection.

[0073] The foldable terminal device in the embodiment of the present application may include an electronic device with a foldable function, such as a foldable mobile phone, a laptop computer, etc. The following takes a foldable mobile phone as an example to illustrate the specific structure of the folding mechanism in the foldable terminal device.

[0074] Please refer to Figure 1, which is a three-dimensional view of a foldable phone 100 in an unfolded state provided by some embodiments of the present application. In the unfolded state, the foldable phone 100 is approximately in the shape of a rectangular flat plate. To facilitate the description of the various embodiments below, an XYZ coordinate system is established for the foldable phone 100 in the unfolded state, defining the length direction of the foldable phone 100 as the X-axis direction, the width direction of the foldable phone 100 as the Y-axis direction, and the thickness direction of the foldable phone 100 as the Z-axis direction. It is understood that the coordinate system setting of the foldable device 100 can be flexibly set according to actual needs and is not specifically limited here. In some other embodiments, the shape of the foldable phone 100 can also be a square flat plate, a circular flat plate, an elliptical flat plate, etc.

[0075] The foldable mobile phone 100 includes a foldable screen 10 and a support device 20 .

[0076] The foldable screen 10 is used to display images, videos, and other information. The foldable screen 10 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (OLED) screen, a quantum dot light-emitting diode (QLED) screen, a liquid crystal display (LCD), and the like.

[0077] The foldable screen 10 has a display area for displaying image information. The display area of ​​the foldable screen 10 is exposed to facilitate presenting images, videos, and other information to the user. The foldable screen 10 includes a first display area 11, a second display area 12, and a third display area 13. The third display area 13 is connected between the first display area 11 and the second display area 12. In the foldable phone 100 shown in Figure 1, when the foldable screen 10 is in the unfolded state, the first display area 11, the third display area 13, and the second display area 12 are arranged in sequence along the X-axis, so that the foldable phone 100 folds in the horizontal direction. In other embodiments, when the foldable screen 10 is in the unfolded state, the first display area 11, the third display area 13, and the second display area 12 can also be arranged in sequence along the Y-axis, so that the foldable phone 100 folds in the vertical direction. When the foldable screen 10 is in the unfolded state, it can achieve a large screen display, providing users with richer information and a better user experience.

[0078] At least the third display area 13 of the foldable screen 10 is a flexible screen structure. This allows the third display area 13 to bend and deform under external force, allowing the foldable screen 10 to fold from the unfolded state shown in Figure 1 to the folded state. The first display area 11 and second display area 12 of the foldable screen 10 can be flexible, rigid, or partially flexible, without specific limitation.

[0079] The support device 20 is used to carry the folding screen 10. Please refer to Figures 2 and 3, which are schematic diagrams of the support device 20 at different folding angles, respectively. The support device 20 includes a first shell 21, a second shell 22 and a hinge mechanism 23. The first shell 21 carries the first display area 11, and the second shell 22 carries the second display area 12. The hinge mechanism 23 is connected between the first shell 21 and the second shell 22, and carries the third display area 13. The hinge mechanism 23 is used to achieve the switching of the angle between the second shell 22 and the first shell 21 to support the folding screen 10 to switch between the unfolded state and the folded state. It can be understood that the hinge mechanism 23 can be multiple groups. Multiple groups of hinge mechanisms 23 can be connected between the first shell 21 and the second shell 22.

[0080] In the above embodiment, the first housing 21 and the second housing 22 may optionally include a middle frame (not shown) and a back cover (not shown) connected together, with a cavity formed between the middle frame and the back cover for accommodating electronic components such as a motherboard, a camera module, and a battery. On this basis, the first housing 21 and the second housing 22 may be connected to the hinge mechanism 23 via the middle frame or the back cover.

[0081] The hinge mechanism 23 may include a hinge base 110 and a hinge cover assembly 120. It is understood that a single folding phone 100 may include multiple hinge mechanisms 23. Multiple hinge mechanisms 23 may share a single hinge cover assembly 120. The structures of multiple hinge mechanisms 23 may be identical. The following describes one hinge mechanism 23:

[0082] The hinge base 110 can be used to support the third display area 13 of the foldable screen 10. The first shell 21 and the second shell 22 can rotate around the hinge base 110. The hinge base 110 has a front and a back facing each other in the thickness direction (Z direction shown in Figure 1). The front can be used to support the foldable screen 10.

[0083] The shaft cover assembly 120 can serve as a protective mechanism for the shaft mechanism 23. The shaft cover assembly 120 can be used to cover the shaft base 110 in the shaft mechanism 23 and the moving parts (not shown) connected to the shaft base 110. The shaft cover assembly 120 can be set on the back of the shaft base 110.

[0084] In addition to the hinge base 110 and the shaft cover assembly 120, the hinge mechanism 23 may also include swing arms 300. A swing arm 300 may be provided at each end of each hinge base 110. The two swing arms 300 are rotatable relative to the hinge base 110. In other words, the two swing arms 300 can rotate about the hinge base 110. The first housing 21 and the second housing 22 may be fixed to the two swing arms 300, respectively. The method of fixing the two swing arms 300 to the first housing 21 and the second housing 22 is not limited, as long as the first housing 21 can be fixed relative to the swing arms 300. The swing arms 300 and the first housing 21 may be fixed by screws. Therefore, the first housing 21 and the second housing 22 can rotate relative to the hinge base 110, allowing the foldable phone 100 to move between the unfolded and folded states. It will be appreciated that in some embodiments, the hinge mechanism 23 may not require the swing arms 300. The first housing 21 and the second housing 22 can be directly rotatable on the hinge base 110.

[0085] Continuing with FIG4 , when the foldable screen 10 is in the folded state, the third display area 13 is folded into a teardrop shape. In this shape, the third display area 13 includes an arc segment 133, a first transition segment 131, and a second transition segment 132. The first transition segment 131 connects between the arc segment 133 and the first display area 11. The second transition segment 132 connects between the arc segment 133 and the second display area 12. The distance between the end of the first transition segment 131 connecting to the first display area 11 and the end of the second transition segment 132 connecting to the second display area 12 is n, and the distance between the end of the first transition segment 131 connecting to the arc segment 133 and the end of the second transition segment 132 connecting to the arc segment 133 is m, where n is greater than m. It is understood that when the foldable terminal device is in the folded state, the third display area 13 of the foldable screen 10 can also be folded into other shapes according to actual needs, and this application does not impose any restrictions on this.

[0086] Please refer to Figures 5, 6 and 7. Figure 5 is a schematic diagram of the hinge mechanism 23 in the unfolded state. Figure 6 is a schematic diagram of a certain angle of the hinge mechanism 23 during the transition from the unfolded state to the folded state. Figure 7 is an exploded view of the hinge mechanism 23 shown in Figures 5 and 6.

[0087] Each swing arm 300 may have two first connecting sleeves 310 at one end. The two first connecting sleeves 310 may be coaxially spaced apart. The first connecting sleeves 310 and the swing arm 300 may be fixed relative to each other. In some embodiments, the first connecting sleeves 310 may be fixed to the swing arm 300 by welding or adhesive bonding. In other embodiments, the first connecting sleeves 310 and the swing arm 300 may be integrally formed.

[0088] The hinge base 110 (as shown in FIG3 ) may include a support plate 350 and a second connecting sleeve 340. The support plate 350 may be used to support the third display area 13 (as shown in FIG1 ) of the folding screen 10 (as shown in FIG1 ). Every two second connecting sleeves 340 may be connected by a connecting plate 352. A second connecting sleeve 340 may be fixedly provided at both ends of each connecting plate 352. In other words, two second connecting sleeves 340 and a connecting plate 352 may constitute a connecting sleeve assembly. Specifically, there may be two connecting sleeve assemblies. In some embodiments, the second connecting sleeve 340 may be fixed to the connecting plate 352 by welding or bonding.

[0089] The width of the connecting plate 352 can be slightly larger than the width of the support plate 350, and the support plate 350 can be connected across the surface of the connecting plate 352. In other words, the connecting plate 352 and the support plate 350 can be stacked. In this case, the second connecting sleeves 340 located at both ends of the connecting plate 352 are also located on both sides of the support plate 350. The two second connecting sleeves 340 can be symmetrically fixed on both sides of the support plate 350. The connecting plate 352 and the support plate 350 can be relatively fixedly connected. The connecting plate 352 and the support plate 350 can be fixedly connected by bolts. In some embodiments, the connecting plate 352 and the support plate 350 can also be welded, riveted or bonded. In some embodiments, the connecting plate 352 and the support plate 350 can also be integrally formed.

[0090] In some embodiments, the second connecting sleeve 340 can also be directly fixed to opposite sides of the support plate 350. Alternatively, the second connecting sleeve 340 and the support plate 350 can be integrally formed. The second connecting sleeve 340 can also be fixed to the support plate 350 through a mechanical structure or welding process. In some optional embodiments, the second connecting sleeve 340 can be fixed to the support plate 350 by screws.

[0091] In addition to the rotating shaft base 110 (as shown in FIG3 ), the shaft cover assembly 120, and the swing arm 300 described in the above embodiment, the rotating shaft mechanism 23 may further include two rotating shafts 320. The rotating shafts 320 may extend along the Y direction. Each rotating shaft 320 may pass through two first connecting sleeves 310 and two second connecting sleeves 340. The two first connecting sleeves 310 may be located between the two second connecting sleeves 340.

[0092] A connecting plate 352 can be provided at each end of the rotating shaft mechanism 23 in the Y direction. The length direction of the connecting plate 352 can be consistent with the X direction. The second connecting sleeve 340 at each end of each connecting plate 352 can pass through a rotating shaft 320. The two swing arms 300 are respectively fixedly arranged on a rotating shaft 320 through the first connecting sleeve 310. The rotating shaft 320 can rotate relative to the second connecting sleeve 340, thereby enabling the two swing arms 300 to be rotated relative to the rotating shaft base 110. For each rotating shaft 320, two second connecting sleeves 340 are provided at both ends of the rotating shaft 320, which can limit the two first connecting sleeves 310 to prevent the swing arms 300 from slipping off the rotating shaft 320.

[0093] The rotating shaft 320 can be fixedly connected to the first connecting sleeve 310. In other words, there is no relative rotation between the rotating shaft 320 and the first connecting sleeve 310. Rotation of the first connecting sleeve 310 can drive the rotating shaft 320 to rotate. The rotating shaft 320 can be rotatably connected to the second connecting sleeve 340. In other words, the rotating shaft 320 can rotate freely within the second connecting sleeve 340. The rotation here refers to the rotating shaft 320 being able to rotate about its own axis.

[0094] When the swing arm 300 rotates about the rotating shaft base 110 (as shown in FIG3 ), it drives the first connecting sleeve 310 to rotate. The first connecting sleeve 310 is fixedly connected to the rotating shaft 320, so the first connecting sleeve 310 can drive the rotating shaft 320 to rotate. The rotating shaft 320 is rotatably engaged with the second connecting sleeve 340, which is fixed relative to the support plate 350. Therefore, the rotating shaft 320 can rotate relative to the support plate 350.

[0095] 7 and 8 , the rotating shaft 320 may have a limiting section 322, and a flattened portion 324 may be formed on the surface of the limiting section 322. The flattened portion 324 prevents the rotating shaft 320 from rotating relative to the first connecting sleeve 310 within the first connecting sleeve 310, thereby securing the rotating shaft 320 to the first connecting sleeve 310.

[0096] Please refer to Figure 9, which is a cross-sectional view of Figures 5 and 6 at AA. The shape of the inner wall of the first connecting sleeve 310 can be adapted to the shape of the surface of the limiting section 322, that is, the profile of the cross section of the limiting section 322 is substantially the same as the shape of the cross section of the first connecting sleeve 310 corresponding to the limiting section 322. The rest of the rotating shaft 320 except for the flattened portion 324 can be cylindrical. When the swing arm 300 swings, it will drive the first connecting sleeve 310. The first connecting sleeve 310 will drive the rotating shaft 320 to rotate through the flattened portion 324. Therefore, the swing arm 300 can swing relative to the rotating shaft base 110.

[0097] In some embodiments, the rotating shaft 320 can be interference-fitted with the first connecting sleeve 310 to secure the rotating shaft 320 and the first connecting sleeve 310 to each other. The swing arm 300 can be secured to the rotating shaft 320 by welding. Alternatively, the swing arm 300 can be secured to the rotating shaft 320 by mechanical means such as rivets or screws.

[0098] Continuing to refer to Figures 5, 6, and 7, the rotating shaft mechanism 23 also includes a damping mechanism 400. The damping mechanism 400 may include an elastic member 410 and a first cam 420. Specifically, for each rotating shaft 320, one elastic member 410 and two first cams 420 are respectively configured. The elastic member 410 may be disposed between the two first cams 420. For each rotating shaft 320, along the axis of the rotating shaft 320, the first connecting sleeve 310, the first cam 420, the elastic member 410, the first cam 420, and the first connecting sleeve 310 are arranged in sequence. Each first connecting sleeve 310 is provided with a second cam 312 at one end facing the first cam 420. The first cam 420 may have a first protrusion 421 and a first recess 422. The second cam 312 may have a second protrusion 313 and a second recess 314. For example, when the swing arm 300 switches from the deployed state to the folded state, the second protrusion 313 of the second cam 312 gradually slides from the first recess 422 of the first cam 420 to the first protrusion 421 of the first cam 420. Therefore, the second protrusion 313 of the second cam 312 gradually abuts against the first protrusion 421 of the first cam 420. This causes the second cam 312 to squeeze the elastic member 410 through the first cam 420. When the swing arm 300 switches from the deployed state to the folded state, the resistance provided by the elastic member 410 is felt, thereby improving the hand feel. A pair of first cams 420 and second cams 312 can be provided at each end of the rotating shaft 320, and their coordination is consistent with the description of the above embodiment, so that the elastic member 410 can be squeezed from both ends.

[0099] It is understood that when the swing arm 300 switches from the folded state to the unfolded state, the elastic member 410 moves in the opposite direction, thereby assisting the swing arm 300 in unfolding. For example, the elastic member 410 can be a spring. The spring can be sleeved in the rotating shaft 320.

[0100] Please refer to Figures 7 and 8 again. An eccentric portion 330 can be provided at the end of the rotating shaft 320. The eccentric portion 330 is eccentric relative to the axis of the rotating shaft 320. That is, when the swing arm 300 drives the rotating shaft 320 to rotate, the eccentric portion 330 will rotate around the axis of the rotating shaft 320. It can be understood that when the rotating shaft 320 rotates, the eccentric portion 330 will have a displacement component in the thickness direction of the rotating shaft base 110. For example, in the process of the rotating shaft 320 rotating one circle, the eccentric portion 330 will have a highest point and a lowest point in the thickness direction of the rotating shaft base 110. The distance between the highest point and the lowest point can be the maximum displacement difference of the eccentric portion 330 in the thickness direction of the rotating shaft base 110.

[0101] Please refer again to Figures 5, 6, 7 (shaft cover 122 not shown), 10, and 11. Figures 10 and 11 are cross-sectional views of Figures 5 and 6 taken at point BB. The shaft cover assembly 120 may include a shaft cover 122 and a lifting block 121. The shaft cover 122 and the lifting block 121 may be fixedly arranged relative to each other. The lifting block 121 may be located on the back side of the rotating shaft base 110 (as shown in Figure 3). The shaft cover 122 is disposed on the side of the lifting block 121 away from the rotating shaft base 110. In other words, the lifting block 121 is located between the rotating shaft base 110 and the shaft cover 122. The fixing method of the shaft cover 122 and the lifting block 121 is not limited, and the shaft cover 122 and the lifting block 121 may be welded, riveted, or otherwise connected. The shaft cover 122 and the lifting block 121 may also be connected by common mechanical means, such as a snap-fit ​​or threaded connection. A receiving groove 500 may be provided on the side wall of the lifting block 121. The eccentric portion 330 may be inserted into the receiving groove 500 along the axial direction of the rotating shaft 320 .

[0102] The eccentric portion 330 can be an eccentric column (see Figure 8). The eccentric column and the rotating shaft 320 can be connected by a connecting arm 321. The connecting arm 321 can be perpendicular to the eccentric column and the rotating shaft 320, respectively. The eccentric column is rotatably disposed in the receiving groove 500. The eccentric portion 330 has a clearance fit with the receiving groove 500. In other words, the cross-sectional area of ​​the eccentric portion 330 can be smaller than the cross-sectional area of ​​the receiving groove 500. The eccentric portion 330 has space to rotate and move within the receiving groove 500. The diameter of the eccentric column can be smaller than the width of the receiving groove 500 along the X-direction. The height of the inner wall of the receiving groove 500 in the thickness direction of the rotating shaft base 110 is less than the maximum displacement difference of the eccentric portion 330 in the thickness direction of the rotating shaft base 110 during one rotation cycle. Therefore, when the eccentric portion 330 rotates, it can drive the shaft cover assembly 120 to move along the thickness direction of the rotating shaft base 110.

[0103] Please continue to refer to Figures 10 and 11. The rotating shaft mechanism 23 (as shown in Figure 3) may further include a guide mechanism 560. The guide mechanism 560 may be arranged between the shaft cover assembly 120 and the rotating shaft base 110. The guide mechanism 560 may include a guide column 561. The lifting block 121 is provided with a second guide hole 353. The rotating shaft base 110 has a first guide hole 351 opened along the thickness direction of the rotating shaft base 110. Specifically, the first guide hole 351 may be opened in the support plate 350. The first guide hole 351 and the second guide hole 353 are coaxially arranged, and a guide column 561 is passed through the first guide hole 351 and the second guide hole 353. The guide column 561 passes through the first guide hole 351 and the second guide hole 353.

[0104] The guide column 561 can be a screw. A threaded groove 583 can be provided on the surface of the shaft cover 122 facing the shaft base. The screw can pass through the first guide hole 351 provided on the support plate 350 and the second guide hole 353 provided on the lifting block 381, and then be inserted into the threaded groove 583 to cooperate with the threaded groove 583. In other words, the screw is relatively fixed to the shaft cover 122 and the lifting block 121 through the threaded groove 583. The diameter of the first guide hole 351 can be slightly larger than the diameter of the screw. In other words, the first guide hole 351 can be loosely matched with the screw, so that the screw can move axially in the first guide hole 351. The first guide hole 351 can have a restraining effect on the movement of the screw. The first guide hole 351 can limit the movement of the screw in the thickness direction of the shaft base to prevent the screw from swinging in the X direction.

[0105] Furthermore, the thread groove 583 can be formed in a cylindrical protrusion 584 on the surface of the shaft cover 122. The diameter of the cylindrical protrusion 584 can be smaller than the diameter of the second guide hole 353. Therefore, the cylindrical protrusion 584 can pass through the second guide hole 353 and approach the first guide hole 351. The first guide hole 351 can also limit the movement of the cylindrical protrusion 584, preventing the first guide hole 351 from swinging in the X direction.

[0106] The following describes the process of the eccentric column driving the shaft cover assembly 120 to move:

[0107] As shown in Figures 10 and 11, when the rotating shaft mechanism 23 (shown in Figure 3) switches from the unfolded state to the folded state, the two swing arms 300 rotate toward each other from the perspective of Figure 11. It can be understood that the rotation of the eccentric column has a component of movement along the X direction and a component of movement in the Z direction.

[0108] As described in the above embodiment, in the Z direction, the height of the inner wall of the receiving groove 500 in the thickness direction of the rotating shaft base 110 is less than the maximum displacement difference of the eccentric portion 330 in the thickness direction of the rotating shaft base 110 (as shown in FIG3 ) during one rotation cycle. Therefore, in the thickness direction of the rotating shaft base 110, when the eccentric portion 330 rotates, it will contact the inner wall of the receiving groove 500 in the Z direction, thereby driving the shaft cover assembly 120 to move along the thickness direction of the rotating shaft base 110.

[0109] As shown in Figures 10a and 11a, Figure 10a is an enlarged view of Figure 10 at position M, and Figure 11a is an enlarged view of Figure 11 at position N. The top b2 of the guide post 561 (the surface of the guide post 561 facing away from the shaft cover 122 in the Z direction) and the top b1 of the support plate 350 (the surface of the support plate 350 facing away from the shaft cover 122 in the Z direction) have different relative heights in the postures of Figures 10 and 11. When the swing arm 300 is in the extended state, the top b2 of the guide post 561 is lower than the top b1 of the support plate 350. When the swing arm 300 is folded to a certain angle, the top b2 of the guide post 561 exceeds the top b1 of the support plate 350. In other words, when the swing arm 300 transitions from the extended state to the folded state, the shaft cover assembly 120 can move toward the hinge base 110; when the swing arm 300 transitions from the folded state to the extended state, the shaft cover assembly 120 can move away from the hinge base 110.

[0110] In this case, the shaft cover assembly 120 is closer to the shaft base 110 when the swing arm 300 is in the folded state. When the shaft cover assembly 120 is folded, it is close to the shaft base 110, which can reduce the gap between the shaft cover assembly 120 and the shaft base 110, and to a certain extent, can avoid the risk of the shaft base 110 and the components connected to the shaft base 110 being exposed.

[0111] It can be understood that by changing the eccentric angle or shape of the eccentric column, the direction of movement of the shaft cover assembly 120 relative to the shaft base 110 can be changed. Continuing with Figure 10 , when the shaft mechanism 23 (as shown in Figure 3 ) is in the horizontally extended state, and the swing arm 300 is in the horizontally extended state, the angle between the connecting arm 321 and the horizontal direction (X direction) is α. The connecting arm 321 can be rotated counterclockwise by 2×(90°-α) based on the angle α, with the position of the eccentric column at this angle serving as the initial position when the swing arm 300 transitions from the extended state to the folded state. In this case, when the swing arm 300 transitions from the extended state to the folded state, the shaft cover assembly 120 can move away from the shaft base 110. When the swing arm 300 transitions from the folded state to the extended state, the shaft cover assembly 120 can move toward the shaft base 110, providing more space between the shaft base 110 and the shaft cover assembly 120 in the folded state.

[0112] As can be seen from the above embodiment, since the shaft cover assembly 120 is constrained in the Z direction by the guide mechanism 560 , that is, the shaft cover assembly 120 cannot follow the eccentric column in the X direction when the eccentric column rotates. Therefore, the eccentric column will move in the X direction relative to the receiving groove 500.

[0113] Continuing to refer to Figures 10a and 11a, the eccentric column has a first distance L1 from the inner wall of the receiving groove 500 in the X direction. When the swing arm 300 is transformed from the unfolded state to the folded state, the eccentric column, driven by the swing arm 300, approaches the inner wall of the receiving groove 500 to the right along the X direction. At this time, the distance between the eccentric column and the inner wall of the receiving groove 500 can be a second distance L2, and the second distance L2 can be smaller than the first distance L1. During this process, the eccentric column rolls in the receiving groove 500. Due to the gap between the eccentric column and the inner wall of the receiving groove 500, the eccentric column will collide with the inner wall of the receiving groove 500 due to shaking during the rolling process, which will cause abnormal noise.

[0114] The inventors further discovered that during rotation, the eccentric column generates sliding friction with the inner wall of the receiving groove 500. If the clearance between the eccentric portion 330 and the inner wall of the receiving groove 500 is not properly controlled, the eccentric portion 330 will collide with the inner wall of the receiving groove 500 during reciprocating motion, generating abnormal noise. Strictly controlling the clearance between the eccentric portion 330 and the inner wall of the receiving groove 500 would require very high machining precision for the receiving groove 500 and the eccentric portion 330, which would increase production costs. Therefore, a low-cost solution to reduce abnormal noise from the rotating shaft mechanism 23 has been proposed.

[0115] The rotating shaft mechanism 23 of the embodiment of the present application may include a limiter. At least a portion of the limiter may be located within the receiving groove 500. The limiter may also be entirely disposed within the receiving groove 500. The limiter may be used to adjust the gap between the eccentric portion 330 and the inner wall of the receiving groove 500, thereby limiting the shaking of the limiter within the receiving groove 500, reducing the hard friction between the eccentric portion 330 and the inner wall of the receiving groove 500, and thus reducing abnormal noise. By reducing the gap between the eccentric portion 330 and the inner wall of the receiving groove 500 through the limiter, the processing accuracy requirements for the receiving groove 500 and the eccentric portion 330 can also be reduced, effectively reducing costs.

[0116] The material hardness of the retaining member can be less than that of the inner wall of the receiving groove 500 and the eccentric portion 330, and the retaining member can act as a buffer between the receiving groove 500 and the eccentric portion 330. In some embodiments, the retaining member can be in a block or layered structure. The shape of the retaining member can also be adapted to the shape of the inner wall of the receiving groove 500, or the shape of the eccentric column.

[0117] Referring to Figures 12 and 13, the limiting member 570 includes a first limiting layer 572, Figure 12 is an exploded view of the lifting block 121 cooperating with the first limiting layer 572, and Figure 13 is a cross-sectional side view of the lifting block 121 cooperating with the first limiting layer 572 in Figure 12. The accommodating groove 500 may include a bottom plate 550, a first side plate 510, a second side plate 520, and a fourth side plate 540. The bottom plate 550, the first side plate 510, the second side plate 520, and the fourth side plate 540 can surround and form the accommodating groove 500. The first side plate 510, the second side plate 520, and the fourth side plate 540 extend along the axis of the rotating shaft 320 (as shown in Figure 7). The ends of the first side plate 510, the second side plate 520, and the fourth side plate 540 are respectively abutted against the bottom plate 550. The bottom plate 550 can be perpendicular to the axis of the rotating shaft 320. The plane of the first side panel 510 and the plane of the second side panel 520 can be perpendicular. The fourth side panel 540 can be positioned adjacent to the shaft cover 122. The fourth side panel 540 can be parallel to the first side panel 510. The bottom panel 550, the first side panel 510, the second side panel 520, and the fourth side panel 540 can be assembled by mechanical assembly or integrally formed.

[0118] The first side plate 510, the second side plate 520, and the fourth side plate 540 may have an inlet 501 at one end away from the bottom plate 550. That is, the bottom plate 550 may be opposite the inlet 501. The eccentric portion 330 may enter the receiving tank 500 through the inlet 501. The surfaces of the first side plate 510, the second side plate 520, and the fourth side plate 540 facing the interior of the receiving tank 500 may constitute the side walls of the receiving tank 500. The surface of the bottom plate 550 facing the interior of the receiving tank 500 may constitute the bottom wall of the receiving tank 500. The bottom plate 550 facing the inlet 501 may be understood as the bottom wall of the receiving tank 500 facing the inlet 501. The bottom wall of the receiving tank 500 and the side walls of the receiving tank 500 may constitute the inner wall of the receiving tank 500.

[0119] The first limiting layer 572 can be located on the side wall of the receiving groove 500. Specifically, the first limiting layer 572 can be fixed on the surface of the fourth side plate 540 facing the inside of the receiving groove 500. The fourth side plate 540 can be closer to the shaft cover 122 relative to the first side plate 510. The first limiting layer 572 can extend along the depth direction (Y direction) of the receiving groove 500. The side wall of the eccentric column can contact the surface of the first limiting layer 572. The first limiting layer 572 can be fixed to the side wall of the receiving groove 500 by bonding or welding. The first limiting layer 572 can fill the gap between the receiving groove 500 and the eccentric column in the Z direction, reducing the collision of the eccentric column with the side wall of the receiving groove 500 in the Z direction.

[0120] It is understandable that the first limiting layer 572 can be set at any position on the inner wall of the receiving groove 500, as long as it can be located between the eccentric portion 330 and the inner wall of the receiving groove 500 to reduce abnormal noise. In some embodiments, the first limiting layer 572 and the eccentric column can be an interference fit. The first limiting layer 572 can provide resistance to the rotation of the eccentric column, thereby having a damping effect and improving the opening and closing feel during user operation. It is understandable that the first limiting layer 572 can be a plate-like structure, and the thickness of the first limiting layer 572 can be set as needed.

[0121] Please refer to Figure 14. Based on the embodiments of Figures 12 and 13, a third limiting groove 573 can be formed on the surface of the first limiting layer 572 facing the inner wall of the receiving groove 500. The third limiting groove 573 extends along the direction in which the rotating shaft 320 extends. In other words, the side wall of the eccentric column can be embedded in the third limiting groove 573 to reduce the degree of shaking of the eccentric column. In some embodiments, the material of the first limiting layer 572 can be a material with a certain degree of flexibility, such as rubber, metal sheet, etc. The first limiting layer 572 can be fixed to the side wall of the receiving groove 500 by bonding or welding.

[0122] Please refer to Figures 15 and 16. Figure 15 is an exploded view of the lifting block 121 and the first limiting layer 572, and Figure 16 is a cross-sectional side view of the lifting block 121 and the first limiting layer 572 in Figure 15. The difference between this embodiment and the embodiments of Figures 12 and 13 is that the first limiting layer 572 can be located on the bottom wall of the receiving groove 500. In other words, the first limiting layer 572 can cover the bottom wall of the receiving groove 500. The end of the eccentric column can abut the bottom wall of the receiving groove 500. Therefore, the first limiting layer 572 can prevent the eccentric column from shaking axially in the rotating shaft 320. In addition, the end of the eccentric column can abut the surface of the first limiting layer 572. When the end of the eccentric column abuts the first limiting layer 572, it can prevent the end of the eccentric column from directly colliding with the bottom of the receiving groove 500 due to shaking, thereby reducing abnormal noise. The end of the eccentric column abuts against the first limiting layer 572, which can also have a damping effect on the rotation of the eccentric column.

[0123] Based on the embodiment shown in Figures 15 and 16, a limiting step 512 is provided on the bottom wall of the receiving groove 500. The limiting step 512 can extend along the X-direction on the surface of the bottom plate 550. The number of limiting steps 512 is not limited. As shown in Figures 15 and 16, when there are two limiting steps 512, the two limiting steps 512 can be respectively provided at two opposite edges of the bottom wall of the receiving groove 500 and close to the side walls of the receiving groove 500. The space between the two limiting steps can be used to limit the first limiting layer 572 to prevent the first limiting layer 572 from falling off the bottom wall of the receiving groove 500.

[0124] In some embodiments, when there is one limiting step 512, the first limiting layer 572 is sandwiched between the limiting step 512 and the side wall of the receiving tank 500. Exemplarily, the limiting step 512 can be located at the edge of the bottom wall of the receiving tank 500. A space can be formed between the limiting step 512 and the side wall of the receiving tank 500, and the first limiting layer 572 can be accommodated in the space to prevent the first limiting layer 572 from shaking in the receiving tank 500. The limiting step 512 can be integrally formed with the inner wall of the receiving tank 500. The limiting step 512 can also be fixed to the inner wall of the receiving tank 500 as a separate part.

[0125] 17 and 18 , FIG17 is an exploded view of the lifting block 121 and the limiting member 570 in one embodiment, and FIG18 is a cross-sectional view of the lifting block 121 and the limiting member 570 in FIG17 .

[0126] In addition to the first limiting layer 572, the limiting member 570 may further include a second limiting layer 575 and a connecting portion 576. The second limiting layer 575 may be located on the outer wall of the lifting block 121. The second limiting layer 575 may be fixed to the outer wall of the lifting block 121 by bonding or embedding. The first limiting layer 572 may be located on the inner wall of the receiving groove 500. The first limiting layer 572 may be connected to the second limiting layer 575 via the connecting portion 576. The connecting portion 576 may be bent to connect the first limiting layer 572 and the second limiting layer 575. The projections of the first limiting layer 572 and the second limiting layer 575 on the inner wall of the receiving groove 500 may or may not overlap. The second limiting layer 575 may restrain the first limiting layer 572, preventing it from falling off the inner wall of the receiving groove 500. In other words, when the eccentric column rotates, the first limiting layer 572 is less likely to fall off from the interior of the receiving groove 500.

[0127] In some embodiments, the connecting portion 576 can be made of a flexible material such as polyester, or a flexible metal material. The connecting portion 576 can be a sheet structure or a bendable columnar structure. The ends of the columnar structure can be connected to the first limiting layer 572 and the second limiting layer 575, respectively. The connecting portion 576 can also be embedded in the outer wall of the lifting block 121 to prevent the connecting portion 576 from falling off.

[0128] The first limiting layer 572, the second limiting layer 575 and the connecting portion 576 can be integrally formed. When the first limiting layer 572, the connecting portion 576 and the second limiting layer 575 are flattened and laid on a plane, they present a flat plate structure. After being formed, the first limiting layer 572, the second limiting layer 575 and the connecting portion 576 can be U-shaped. When the limiting member 570 is matched with the lifting block 121, the first limiting layer 572 and the second limiting layer 575 can be respectively attached between the inner wall of the accommodating groove 500 and the outer wall of the lifting block 121. It can be understood that the outer wall of the lifting block 121 and the outer wall of the accommodating groove 500 refer to the same surface.

[0129] The first limiting layer 572, the connecting portion 576, and the second limiting layer 575 can be formed on the lifting block 121 by injection molding. The material of the first limiting layer 572, the connecting portion 576, and the second limiting layer 575 can be a soft rubber, such as a polyester material such as rubber, or a polycarbonate (PC) material. In some embodiments, the protrusion structure 574 can also be made by a mold.

[0130] Please continue to refer to Figures 17 and 18. In addition to the first side plate 510, the second side plate 520 and the fourth side plate 540, the accommodating groove 500 may also include a third side plate 530. The plane where the first side plate 510 is located can be perpendicular to the thickness direction of the rotating shaft base 110 (as shown in Figure 3). The second side plate 520 and the third side plate 530 can be located at opposite ends of the first side plate 510. The plane where the second side plate 520 is located and the plane where the third side plate 530 is located can extend along the axis of the rotating shaft 320. In other words, the second side plate 520 and the third side plate 530 can be parallel to the axis of the rotating shaft 320. Furthermore, the second side plate 520 and the third side plate 530 can be parallel to the Z direction. The opposite ends of the first side plate 510 can respectively abut on the two opposite surfaces of the second side plate 520 and the third side plate 530. On one side of the first side plate 510, that is, on the side of the limiting block 121 facing away from the receiving groove 500, the first side plate 510, the second side plate 520, and the third side plate 530 surround and form a second limiting groove 582. On the other side of the first side plate 510, that is, on the side within the receiving groove 500, the first side plate 510, the second side plate 520, and the third side plate 530 surround and form a portion of the receiving groove 500. The second limiting layer 575 can be located in the second limiting groove 582. The second limiting layer 575 can be embedded in the second limiting groove 582 to prevent the second limiting layer 575 from falling off the surface of the lifting block 121.

[0131] It is understood that when the lifting block 121 is an integral structure, the second limiting groove 582 can also be a recessed structure formed on the surface of the lifting block 121. The second limiting layer 575 can be embedded in the second limiting groove 582. The shape of the second limiting groove 582 can be adapted to the shape of the second limiting layer 575. In some embodiments, the second limiting layer 575 can be rectangular, elliptical, conical, circular, etc. The depth of the second limiting groove 582 can be the same as the thickness of the second limiting layer 575. The depth of the second limiting groove 582 can also be slightly greater than the thickness of the second limiting layer 575.

[0132] The first side plate 510, the second side plate 520, and the third side plate 530 surround the inner wall of the receiving tank 500 to form a first limiting groove 584. In other words, the surfaces of the first side plate 510, the second side plate 520, and the third side plate 530 facing the inside of the receiving tank 500 surround the first limiting groove 584. The first limiting layer 572 is located in the first limiting groove 584. The second limiting groove 582 and the first limiting groove 584 can be divided into two sides located on the first side plate 510. It can be understood that the first limiting groove 584 can be a part of the receiving tank 500. The shape of the first limiting groove 584 can be adapted to the shape of the first limiting layer 572, thereby preventing the first limiting layer 572 from shaking in the receiving tank 500. Furthermore, the distance between the second side plate 520 and the third side plate 530 can be the same as the width of the first limiting layer 572, thereby preventing the first limiting layer 572 from shaking.

[0133] The ends of the first side panel 510, the second side panel 520, the third side panel 530, and the fourth side panel 540 facing away from the bottom panel 550 form the entrance 501 of the receiving tank 500. The ends of the first side panel 510, the second side panel 520, the third side panel 530, and the fourth side panel 540 facing the bottom panel 550 all abut against the surface of the bottom panel 550. Along the axis of the rotation shaft 320, the length of the second side panel 520 and the length of the third side panel 530 can be the same, and the length of the first side panel 510 can be less than the length of the second side panel 520 and the third side panel 530. Therefore, at the entrance 501 of the receiving tank 500, the first side panel 510 is a short panel, which is equivalent to the first side panel 510 being recessed toward the bottom panel 550 to form the limiting opening 511. The connecting portion 576 can overlap the limiting opening 511 to connect the first limiting layer 572 and the second limiting layer 575. It is understood that the first side plate 510 may have a certain thickness, and the connecting portion 576 may cover the end of the first side plate 510 forming the limiting opening 511. The limiting opening 511 can also prevent the connecting portion 576 from falling off from the limiting opening 511.

[0134] Please refer to Figures 19, 20, and 21. Figure 19 is an exploded view of the lifting block 121 and the limiting member 570 in one embodiment. Figure 20 is a side cross-sectional schematic diagram of the lifting block 121 and the limiting member 570 in Figure 19. Figure 21 is a front cross-sectional schematic diagram of the lifting block 121 and the limiting member in Figure 19. In this embodiment, based on the embodiments of Figures 17 and 18, the material of the first limiting layer 572, the second limiting layer 575, and the connecting portion 576 is replaced with metal instead of soft rubber. For example, the first limiting layer 572, the second limiting layer 575, and the connecting portion 576 can be stainless steel. The first limiting layer 572, the second limiting layer 575, and the connecting portion 576 can be connected to each other to form a curved metal sheet structure. The first limiting layer 572 and the second limiting layer 575 can be the two ends of the metal sheet structure. The connecting portion 576 is the curved portion of the metal sheet structure. The metal sheet structure can have a certain degree of elasticity. In some embodiments, the metal sheet structure can be made of stainless steel.

[0135] Please refer to Figure 22, which is a schematic diagram of the limiting member 570, wherein the first limiting layer 572 is provided with a protruding structure 574 protruding toward the receiving groove 500, and the protruding structure 574 abuts the side wall of the eccentric column. The protruding structure 574 can have a certain elasticity, so it can play a buffering role on the eccentric column when the eccentric column shakes. In some embodiments, the number of protruding structures 574 can be set as needed. For example, a plurality of protruding structures 574 arranged at intervals can be formed on the surface of the first limiting layer 572, so that the first limiting layer 572 can form multiple contact points with the side wall of the eccentric column to improve the stability of the contact. The formation method of the protruding structure 574 is not limited. For example, the protruding structure 574 can be formed by bending the first limiting layer 572. In some embodiments, the protruding structure 574 can be formed by stamping and bending.

[0136] The protruding structure 574 is disposed in the middle of the first limiting layer 572. In other words, the protruding structure 574 does not need to be located at the ends of the first limiting layer 572. The ends of the first limiting layer 572 abut against the surface of the first side plate 510 facing the receiving groove 500. When the protruding structure 574 is squeezed by the eccentric column, the force can be transmitted to the first side plate 510 through the ends of the first limiting layer 572.

[0137] Please refer to Figure 23, which is a schematic diagram of another embodiment of a stopper 570. In some embodiments, the raised structure 574 is located at the end of the first stopper layer 572 near the base plate 550. The raised structure 574 can provide support for the eccentric column and provide a vibration buffer. In some embodiments, the raised structure 574 can be formed by bending the end of the metal sheet structure. The end of the metal sheet can be formed into a folded structure to support the surface of the first side plate 510 to enhance stability.

[0138] Please refer to Figure 24, which is a schematic diagram of another embodiment of the cooperation between the limiting member 570 and the lifting block 121. Unlike the above embodiment, the first limiting layer 572 can be located on the side of the fourth side plate 540 facing the interior of the receiving tank 500, and the second limiting layer 575 can be located on the side of the fourth side plate 540 facing away from the interior of the receiving tank 500. In other words, the first limiting layer 572 and the second limiting layer 575 are clamped on two opposing surfaces of the fourth side plate 540 via the connecting portion 576.

[0139] Please refer to Figures 25 and 26. Figure 25 is a schematic diagram of the cooperation between the limiting member 570 and the lifting block 121 in another embodiment, and Figure 26 is an exploded view of the embodiment of Figure 25. Unlike the above embodiment, in this embodiment, the first limiting layer 572 is located on the surface of the bottom plate 550 facing the interior of the receiving tank 500. The second limiting layer 575 is located on the surface of the bottom plate 550 facing away from the interior of the receiving tank 500. The connecting portion 576 connects the first limiting layer 572 and the second limiting layer 575 through the opening 502 located between the first side plate 510 and the fourth side plate 540.

[0140] The second limiting layer 575 can be fixed to the outer wall of the bottom plate 550 by bonding, welding, etc., thereby preventing the first limiting layer 572 from falling off the bottom plate 550. The first limiting layer 572 can reduce the impact of the end of the eccentric column on the bottom of the receiving groove 500, and can also provide damping for the rotation of the eccentric column, thereby improving the user experience.

[0141] The opening 502 formed between the first side panel 510 and the fourth side panel 540 can be set according to size. The opening 502 between the first side panel 510 and the fourth side panel 540 can be opposite to the third side panel 530. The same end of the first side panel 510 and the fourth side panel 540 abuts against the surface of the second side panel 520 facing the inner portion of the accommodating groove 500. The other end of the first side panel 510 and the fourth side panel 540 can be a free end, forming an opening 502. Through the opening 502, the connecting portion 576 can bypass the end of the bottom plate 550 away from the second side panel 520 and respectively connect the first limiting layer 572 and the second limiting layer 575. In some embodiments, the connecting portion 576 can be embedded in the end of the bottom plate 550 away from the second side panel 520 to enhance the stability of the cooperation between the limiting member 570 and the lifting block 121.

[0142] As can be seen from the above embodiment, the lifting block 121 can be a symmetrical structure. In other words, the two receiving slots 500 can be symmetrically arranged about the second guide hole 353. The second guide hole 353 can be located on the symmetry axis of the rotating shaft mechanism 23. The second side plate 520 can be arranged near the second guide hole 353. The above-mentioned opening 502 can be formed on the side of the second side plate 520 away from the second guide hole 353. Each receiving slot 500 can be matched with a limit member 570. Since the structure and matching relationship of each receiving slot 500 and the limit member 570 are the same, they will not be repeated here.

[0143] It can be understood that the verticality and parallelism described in the embodiments of the present application are not strictly verticality and parallelism in the mathematical sense. The verticality here can be understood as a positional relationship that is close to vertical within the range of manufacturing error and operation error.

[0144] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating shaft mechanism, characterized in that: include: Rotating shaft base; A shaft cover assembly is provided on one side of the shaft base along the thickness direction of the shaft base, and the shaft cover assembly is provided with a receiving groove; A rotating shaft, rotatably disposed on the rotating shaft base; An eccentric portion is fixedly provided at one end of the rotating shaft, and the eccentric portion deviates from the axis of the rotating shaft; the eccentric portion is rotatably provided in the accommodating groove and is gap-matched with the accommodating groove, and when the rotating shaft rotates, the shaft cover assembly is driven to move along the thickness direction of the rotating shaft base by the eccentric portion; and a limiting member is at least partially located in the accommodating groove, and is used to abut against the eccentric portion during rotation.

2. The rotating shaft mechanism according to claim 1, wherein: The limiting member includes a first limiting layer, the first limiting layer is arranged on the inner wall of the accommodating groove, and the eccentric portion abuts against the first limiting layer.

3. The rotating shaft mechanism according to claim 2, wherein: The shaft cover assembly includes a lifting block and a shaft cover that are relatively fixed. The shaft cover is arranged on a side of the lifting block away from the rotating shaft base. The lifting block is provided with the accommodating groove.

4. The rotating shaft mechanism according to claim 3, wherein: The limiting member also includes a second limiting layer and a connecting portion. The second limiting layer is arranged on the outer wall of the lifting block. The inner wall of the accommodating groove is opposite to the outer wall of the lifting block. The first limiting layer and the second limiting layer are connected by the connecting portion.

5. The rotating shaft mechanism according to claim 4, wherein: The lifting block includes a bottom plate and a first side plate, and the bottom plate and the first side plate surround and form at least a portion of the accommodating groove. The entrance of the accommodating groove is opposite to the bottom plate. The plane where the first side plate is located extends along the axis of the rotating shaft. The first limiting layer is located on the surface of the first side plate facing the interior of the accommodating groove, and the second limiting layer is located on the surface of the first side plate facing away from the interior of the accommodating groove. The connecting portion connects the first limiting layer and the second limiting layer through the entrance of the accommodating groove.

6. The rotating shaft mechanism according to claim 5, wherein: The first limiting layer is provided with a protruding structure protruding toward the accommodating groove, and the protruding structure abuts against the eccentric portion.

7. The rotating shaft mechanism according to claim 6, wherein: The protruding structure is arranged in the middle of the first limiting layer, and both ends of the first limiting layer are respectively in contact with the surface of the first side plate facing the accommodating groove.

8. The rotating shaft mechanism according to claim 6, wherein: The protruding structure is located at one end of the first limiting layer close to the bottom plate.

9. The rotating shaft mechanism according to any one of claims 5 to 8, characterized in that: The lifting block includes a second side plate and a third side plate, the planes where the second side plate and the third side plate are located extend along the axis of the rotating shaft and are respectively located at opposite ends of the first side plate, the bottom plate, the first side plate, the second side plate and the third side plate surround and form at least part of the accommodating groove, the first side plate, the second side plate and the third side plate surround the outer wall of the lifting block to form a first limiting groove, and the second limiting layer is located in the first limiting groove.

10. The rotating shaft mechanism according to claim 9, wherein: The bottom plate, the first side plate, the second side plate and the third side plate surround the inner wall of the accommodating groove to form a second limiting groove, and the first limiting layer is located in the second limiting groove.

11. The rotating shaft mechanism according to any one of claims 5 to 10, characterized in that: The first side plate is sunken toward the bottom plate at the entrance of the accommodating groove to form a limiting opening, and the connecting portion is located at the limiting opening.

12. The rotating shaft mechanism according to claim 4, wherein: The lifting block includes a bottom plate, a first side plate, and a fourth side plate. The entrance of the receiving groove is opposite to the bottom plate. The planes where the first side plate and the fourth side plate are located extend along the axis of the rotating shaft. The fourth side plate is opposite to the first side plate. The bottom plate, the first side plate, and the fourth side plate surround and form at least a portion of the receiving groove. The first limiting layer is located on the surface of the bottom plate facing the interior of the accommodating groove, the second limiting layer is located on the surface of the bottom plate away from the interior of the accommodating groove, and the connecting portion connects the first limiting layer and the second limiting layer through an opening located between the first side plate and the fourth side plate.

13. The rotating shaft mechanism according to any one of claims 4 to 12, characterized in that: The first limiting layer, the connecting portion and the second limiting layer are integrally formed.

14. The rotating shaft mechanism according to any one of claims 4 to 13, wherein: The first limiting layer, the connecting portion and the second limiting layer are metal sheets.

15. The rotating shaft mechanism according to any one of claims 4 to 13, characterized in that: The first limiting layer, the second limiting layer and the connecting layer are formed on the lifting block by injection molding.

16. The rotating shaft mechanism according to claim 2, wherein: The inner wall of the receiving groove includes a bottom wall and side walls, the bottom wall of the receiving groove is opposite to the entrance of the receiving groove, the side walls extend along the axis of the rotating shaft, and the first limiting layer is arranged on the bottom wall of the receiving groove.

17. The rotating shaft mechanism according to claim 16, wherein: Two limiting steps are arranged at intervals on the bottom wall of the accommodating groove, and the first limiting layer is sandwiched between the two limiting steps.

18. The rotating shaft mechanism according to claim 2, wherein: The inner wall of the receiving groove includes a bottom wall and a side wall. The bottom wall of the receiving groove is opposite to the entrance of the receiving groove. The side wall extends along the axis of the rotating shaft. The first limiting layer is arranged on the side wall.

19. The rotating shaft mechanism according to claim 18, wherein: A third limiting groove is provided on a surface of the first limiting layer facing the interior of the accommodating groove, and the third limiting groove extends along the direction in which the rotation axis extends.

20. The rotating shaft mechanism according to any one of claims 3 to 19, wherein: Also includes: The guide mechanism is arranged between the shaft cover assembly and the rotating shaft base, and is used to constrain the shaft cover assembly to move along the thickness direction of the rotating shaft base.

21. The rotating shaft mechanism according to claim 20, wherein: The shaft base is provided with a first guide hole along the thickness direction of the shaft base, the lifting block is provided with a second guide hole, the first guide hole and the second guide hole are coaxially arranged, and guide columns are passed through the first guide hole and the second guide hole.

22. The rotating shaft mechanism according to any one of claims 1 to 21, characterized in that: The eccentric portion includes an eccentric column, which is fixedly arranged at one end of the rotating shaft, the axis of the eccentric column is parallel to the axis of the rotating shaft, the width of the accommodating groove is greater than the diameter of the eccentric column, the width direction of the accommodating groove is perpendicular to the axis of the rotating shaft and the thickness direction of the rotating shaft base, and the axis of the rotating shaft is perpendicular to the thickness direction of the rotating shaft base; When the eccentric column rotates around the axis of the rotating shaft, the eccentric column is at its lowest position in the thickness direction of the rotating shaft base. The maximum displacement difference is a first distance, the height of the accommodating groove in the thickness direction of the rotating shaft base is a second distance, and the first distance is greater than the second distance.

23. The rotating shaft mechanism according to any one of claims 1 to 21, characterized in that: It also includes a swing arm fixedly connected to the rotating shaft.

24. A rotating shaft mechanism, characterized in that: include: Rotating shaft base; A shaft cover assembly is provided on one side of the shaft base along the thickness direction of the shaft base, and the shaft cover assembly is provided with a receiving groove; A rotating shaft, rotatably disposed on the rotating shaft base, wherein the axis of the rotating shaft is perpendicular to the thickness direction of the rotating shaft base; an eccentric column fixedly disposed at one end of the rotating shaft, wherein the axis of the eccentric column intersects the axis of the rotating shaft, the width of the accommodating groove is greater than the diameter of the eccentric column, and the width direction of the accommodating groove is perpendicular to the axis of the rotating shaft and the thickness direction of the rotating shaft base; When the eccentric column rotates around the axis of the rotating shaft, the maximum displacement difference of the eccentric column in the thickness direction of the rotating shaft base is a first distance, the height of the accommodating groove in the thickness direction of the rotating shaft base is a second distance, and the first distance is greater than the second distance; as well as The limiting member is at least partially located in the accommodating groove and is used to abut against the eccentric column during rotation.

25. The rotating shaft mechanism according to claim 24, wherein: The limiting member includes a first limiting layer, the first limiting layer is arranged on the inner wall of the accommodating groove, and the eccentric portion abuts against the first limiting layer.

26. The rotating shaft mechanism according to claim 25, wherein: The shaft cover assembly includes a lifting block and a shaft cover that are relatively fixed. The shaft cover is arranged on a side of the lifting block away from the rotating shaft base. The lifting block is provided with the accommodating groove.

27. The rotating shaft mechanism according to claim 26, wherein: The limiting member further includes: a second limiting layer and a connecting portion, wherein the connecting portion is connected to the first limiting layer and the second limiting layer respectively; The lifting block includes a bottom plate and a first side plate, and the bottom plate and the first side plate surround and form at least a portion of the accommodating groove. The entrance of the accommodating groove is opposite to the bottom plate. The plane where the first side plate is located extends along the axis of the rotating shaft. The first limiting layer is located on the surface of the first side plate facing the interior of the accommodating groove, and the second limiting layer is located on the surface of the first side plate facing away from the interior of the accommodating groove. The connecting portion connects the first limiting layer and the second limiting layer through the entrance of the accommodating groove.

28. The rotating shaft mechanism according to claim 27, wherein: The lifting block includes a second side plate and a third side plate, wherein the planes on which the second side plate and the third side plate are located extend along the axis of the rotating shaft and are respectively located at opposite ends of the first side plate, and the bottom plate, the first side plate, the second side plate and the third side plate surround and form at least a portion of the accommodating groove; The first side plate, the second side plate and the third side plate surround the outer wall of the lifting block to form a first limiting groove, and the second limiting layer is located in the first limiting groove; The first side plate, the second side plate and the third side plate surround the inner wall of the accommodating groove to form a second limiting groove, and the first limiting layer is located in the second limiting groove.

29. The rotating shaft mechanism according to claim 27 or 28, wherein: The first side plate is sunken toward the bottom plate at the entrance of the accommodating groove to form a limiting opening, and the connecting portion is located at the limiting opening.

30. The rotating shaft mechanism according to any one of claims 25 to 29, wherein: The first limiting layer is provided with a protruding structure protruding toward the accommodating groove, and the protruding structure abuts against the eccentric portion.

31. The rotating shaft mechanism according to any one of claims 24 to 30, wherein: Also includes: The guide mechanism is arranged between the shaft cover assembly and the rotating shaft base, and is used to constrain the shaft cover assembly to move along the thickness direction of the rotating shaft base.

32. A foldable terminal device, characterized in that: Comprising the rotating shaft mechanism according to any one of claims 1-31.

Images